package kuonjisai.oop;

public class J31_StockService implements J31_StockInterface {

	@Override
	public float getChangePercent(J31_StockVO svo) {
		return 1 - ( ( (float)svo.getPreviousClosingPrice() / svo.getCurrentPrice() ) * 100 );
	}

	
	
} //J31_StockService
